Device for manufacturing vacuum-containers.



P. lIRWIN.

DEVICE FOR MANUFACTURING VACUUM CONTAINERS.

APPLICATION FILED sEPT.'I5. I9I5.

1,284, l 94.-. Patented Nov. 5, 1918.

PAYSON IRWIN, OF STAMFORD, CGNNECTICUT.

DEVICE FOR MANUFACTURING VACUUM-CONTAINERS.

' Specification of Letters Patent.

f Patenten Nov. 5,1918.

Application filed. September 15, 1915. Serial No. 50,917.

To all whom it may concern:

Be it known that I, PAYsoN IRWIN, a` citi- Zen of the United States ofAmerica, residing atStamford, Fairfield county, Connecticut, haveinventedA certain new and useful Improvements in Devices forlvlanufacturidg Vacuum-Containers, of which the following is aspecification.

My invention relates to devices for manufacturing vacuum containers andthe object of the invention is to produce a device of the character setforth whereby a vacuum container may be easily, cheaply and effectivelymade. i

Although the principles of the invention may be adapted to themanufacture of any desired form of vacuum container, I have chosen toillustrate the working of a form of apparatus embodyingmy invention inconnection with the type of vessel described and claimed `in myapplication for patent on vacuum containers filed September 15, 1915,Serial No. 50,916. y

In the following is described, in connection with the accompanyingkdrawings, a form of apparatus illustrating one way of carrying out myinvention, the features thereof being hereinafter more particularlypointed out in the claims.` l

In the drawings Figure 1 is a longitudinal vertical, sectional view ofsaid form of apparatus along 4the line l--lof Fig. 2 showing in fulllines the two partsv of the container before they have been broughttogether and in dotted lines said two parts after they havel beenbrought'together;Fig. --2 is a front view of saidapparatus; Fig. r3 is across-sectional View of the partsshown in Fig. 1' along thelineB-B vandFig. 4 is a vertical sectional view of the completed container.' i

f Similar'letters of reference'indicate'similar parts throughouttheseveral views.

. A indicates a shell carried by legs or standards B, B and connectedwith a va'cuum pump (not shown) byjajpipe G controlled by a two-wayvalve D adapted]` to connect with the vacuum pump or to relieve thevacuum through'pipe E as the case maybe. The shell A is provided withadoor Ffswinging on hinge G and adapted to be secured to the shell byscrew clamps H, H. A gasket I provides an air-tight closure of the doorand shell. The central portion of door F is provided with a flexiblediaphragm J of material impervious to air such as rubber or L projectsoutwardly through cross bar O in which it may be held by jaws P, P,taking into a slot (not shown) in the stem. Cross bar O may be mountedon door F in any convenient way as by rods Q, Q. R is a mandrelcentrally supported in shell A. S is a Saddle mounted on the floor ofshell A. T is the inner container" of the vacuum container, shown asmounted on mandrel B, and Uis the outer container thereof shown ascarried by saddle S.

- The operation'of the device is as follows: The door being open theinner container T is slid onto the mandrel and the outer container U isplaced upon the saddle leaving a space between the upper edges of therespective containers, as shown in Fig. l. The bottom of container Ushould be substantially vin contact with diaphragm J when the door isclosed-and'stem L held by jaws P, P. As

' illustrated outcrcontainer T is provided-with a rim V having a fiatsurface beneath, and' a shoulder lVover lwhich the upper end ofcontainer U'is adapted to slide, as herein- .after described,until itsupper flat kedge .contacts with the lower fiatsurface of rim V oncontainer T. X is 'a lug on the bottom of container U adapted to contactwith the -bottom of container T when the'parts are tainer U, thestein-:L beinghcld against inward movementby jaws P, P. The shell isVthen evacuated. VVhenlthel` evacuation yis completedto' the desireddegree the jaws P,

P are released Vfrom stem L and the atmospheric pressuredrives thediaphragm and 'container AU inwardly until the upper flair,

edge of said container contacts 'with the under flat surface of rim V onthe outer container and lug X .rests against Vthe bottom of- ,containerT. The vacuum is thenreleased, the door opened and the vacuum containerremoved, the atmospheric pressure y.

holding the two containers together with the evacuated space betweenthem.

, If desired any suitable cementitious substance may be placed on theunder flat surface of rim V and on shoulder W toassist in holding thecontainers together and forming an air-tight connection.

The container maybe made of any suit,

able material substantially impervious to air such as glass, metal,treated paper, etc., and may be of any suitable form. The shell may ofcourse be adapted tov contain one 0r any desirable number of containersat a time.

As it is obvious :that thedetail's of .construction may be greatly,varied Without departing from the general principles of the invention, Ido not restrict Ymyself tof-such details further than the scope of theap pended claims demands. i

v'I claim:

1V. In a device for manufacturing vacuum containers, an air-tightchamber, a support therein for an 4inner container, a support for. anouter container, a--fle'xible diaphragm adapted tol respond horizontallyto atmospheric pressureV When the vacuumis established `and means forevacuating said chamber.

2. In a device for manufacturing vacuum containers, an air-tightchamber, a mandrel supported Within the same in a horizontal positionand distant from the Walls of the chamber, a saddle on the floor ofVsaid chamber adjacent said mandrel and adapted to support a suitablebody` surrounding .said 'mandrelandllexible means at the endY of thechamber opposite the mandrelsupport adapted-to lne-,flexed toward thevtree' end of fthe? mandrel by atmospheric pressure.

3; In a device for manufacturing Vvacuum containers, an air-tightchamber, supports -within thesame for the articles to be operated upon,adoor at one end of said chamb er'a {lexible diaphragm in said door,

means for restraining said diaphragm-from 4inward horizontal collapse#and releasing means, freeing said diaphragm for collapse causedybyatmospheric pressure.

f4. In a device for manufacturing yacuum containers, :an air-tightchamber, evacuating means therefor, means for -relieying;the

-in the chamber adjacent the 1free' end o the yacuum, a -mandrel yWithinlthechamber adapted to support theuinner-containerof a yvacuumVcontainer Ain horizontal position, a saddle Within the chamberadapted/to support the outer containerof al vacuum'- container--in a:position surrounding 'the mandreland the inner conta1ner,a lflexible"Wall Copiesof this `patent mayy 13e obtained for mandrel, means forholding said flexible Wall against collapse When the chamber is beingevacuated and releasing means for ysaid lastfnamed means soY that saidflexible Wall may be collapsed horizontally inward by atmosphericpressure.

5. In a device for manufacturing vacuum containers, an air-tightchamber, means for evacuating the same and for relieving the vacuum,supports `Within the chamber for the coperatinginner `and :outercontainers of a rvacuum container adapted to hold the sa-me'in ahorizontal position and means responding to 4atmospheric Vpressure for.causing .relative horizontal rmovement between said. :inner and 4outercontainers vvvhile :said chamber is in an evacuated condition.

16. -In -adevice for manufacturing vacuum containers, .an air-tightchamber,- asupport for anwinner.- container, a support for, an outercontainer, means for evacuating the chamber land means actuated byatmospheric pressure for bringing the parts or the` container togetherWhile maintaining the vacuum.

7.` Ina device for manufacturing vacuum containers, an air-tightchamber,means for Ypositioning the container yparts thereinrela tivetoeachother but out of contact With each other, av flexible diaphragmadapted to respond to.V atmospheric pressure tobring said containerparts into contact and means Vfor evacuating said chamber.

8; Ina device formanufacturing vacuum containers, an vair-tight chamber,i independent supports for the container parts, -means lcontainers, anairetight chamber, means for 4positioning the container parts .thereinout of contact Witheach other and movable relativel-y torvardeach other,means adapted to vrespond to .atmospheric'pressure to ybringsaid-partsfinto contact `when the. vacuum is established and Ymeans for--evacuating the chamber. V 'In testimony whereof I have signed -thisspecication in the presenceV of twosubscribing witnesses.

Y v l 'PAYSOIYYIYRWYIN Witnesses vMrarn "QnMAnEsT,

L. C; BISHOP.

ve Vcentreac`h,fby addressing the Commissioner ofatents,iWaVshipngtoinl.C. f

